Machine for forming and setting wire staples.



I. COHEN.

MACHINE FOR FORMING AND SETTING wIRE STAPLES.

APPLICATION FILED OCT. l5, I9I4.

Patented May'2, 1916.

2 SHEETSSHEET I itmeooeo: I

l. COHENi MACHINE FOR FORMINGAND SETTING WIRE STAPLES.

APPLICATIOh FILED OCT- 16. 19M.

Patented May 2, 1916.

2 SHEETSSHEE'T 2- Wit meow o orrrb,

ISADORE COHEN, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF T LANDSBERG BROTHERS, OF NEW YORK, N. Y.

v MACHINE FOR FORMING AND SETTING WIRE STAPLES.

Specification of Letters Patent.

Patented May 2, illHHlt'i.

Application filed October 16, 1914. Serial No. 866,948.

useful Improvements in Machines for Forming and Setting \Vire Staples, of which the following is a speclfication.

"The present invention relates to improvementsin machines for forming and setting wire staples andhas for its object to provide a device of this class which is simple 'in'construction, cheap to manufacture and efiiciente' m-operation, and m which the for matron/and setting of the staple and the feeding of the wire is accomplished by a single stroke of a' manually operated lever.

My invention is illustrated in the accom- ".1)anyi1igdrawings, in which similar reference,characters denote corresponding parts and? in which k,

--ll*igure 1 a front elevation of device;

"l ig. 2 a vertical section on line 22 of F12; 1 1;

Fig. 3 a vertical section on line 3-3 of Fig." 2; Flg. 4 a section similar to Fig. 3,

somewhat enlarged and with the frame and denotes the formed with a lateral bracket 7)" supporting the actuating means removed, and Fig. 5 is a rear vlew of the member carrying the cutting blade and of the member carrying the resilient anvil over which the wire is bent into a staple.

Specifically referrlng to the draw1ngs,a base which carries the frame 7) a cylindrical magazine 0 which is open in front. Revo-lubly borne'in this magazine on a central spindle or pin 1" is a spool (Z on which the wire 6 is wound. The free end of the wire is passed outwardly fron'rthe magazine through a passage 0 in the pe riphery of the magazine. A spring brake (Z for the spool is hinged to the magazine at J and presses against the outer face surface of the spool 17. The opposite free end d of the spring brake (7 engages by friction or otherwise with the circumference of .the magazine 0. Projecting forwardly from the upper end of the frame is a headed pin f which serves as a fulcrum for a manually operated cam lever g whereby the machine is operated. in front and below the pin f the frame is provided with a vertical groove 7) in which is slidably borne a member i formed at its top with a boss i and at its member j which at its bottom is formed with.

an enlarged projection or boss 7" that extends into the said space 2' abovethe staple driver and between which and the boss 2" a spring is is provided, whereby the member i is yieldingly supportedin the groove or recess b of the frame, and in the range of the cam-shaped surface g of'the cam lever g by which it is operated. The member j on the other hand has a link connection h with the cam lever 7, one end of said link it being fastened at h? to the upper end of the member and the other end thereof being slotted at h to engage a pin k projecting from a point located away from the center of the fulcrum 7. Normally, that is when the parts are in their initial position, the link h extends in vertical direction as shown in Fig. 1. The member j is provided with two legs or downward extensions 7' projecting below and at the sides of the boss j, and which at their opposite inner edges and at their lower edges are provided with longitudinal grooves 7'', j respectively. The leg located on the side of the wire magazine at the corner of the outer and lower edges is provided with a sharpened projection i which serves as a cutting edge or blade. Provided with an inner or rear vertical groove Z forming a guideway for the member y' and its legs or extensions 3' is a plate Z which is fixed to the frame by screws Z. This plate serves to hold the members i and y' in proper position within the groove 6 ofv the frame, and also as a support for a member m. The latter is formed at its lower end and on its rear with a projection or block m which is adapted to serve as an anvil over bend the "severed severed piece of wire continuation of 7' thereof. Above the block or anvil m the member m is provided'with a cam or toothlike projection m with which the projection z"? or the staple driver 1? is adapted to co-. operate during the depression of the member i to push the member m forwardly and to thereby release the staple e formed of the wire '6 in the manner to be hereinafter more fully described. The tiltable or yielding member We is pressed into the. normal vertical position by a suitable spring m which is fixed to the plate Z by the screws Z The plate Z is provided with a tubular opening Z extending transversely from the side facing the wire magazinetowardand about in line with the upper surface of the anvil,

. this opening serving as a passage for the wire 6 comlng from the magazine.

. Arranged on the base a in the path of the legs or extensions i of the member j and also of the staple driver 2' is a clc-richlng block b which in conjunction with the latter serves to clench the legs of the U-shaped staple.

The feeding of the wire is accomplished by a toothed spring actuated pawl 0 which is carried by a lever 0. The latter is fulcrumed to the frame at- 0 and its free end 0 is cam-shaped engaging acorrespondingly shaped groove 9 of the cam lever 57. A spring actuated clamping cam nserves to grip the wire to holdit in position during the operation and prevent it from being drawn away from the anvil m.

The operatibn of the device is as follows: By turning the lever from the position shown in Fig. l the feeding lever 0 will be swung from the full line position into the dotted line position thereby causing the pawl 0 to feed the wire a given length and the wire e .to pass through the opening i across the anvil m The stroke of the pawl 0 corresponds to the width of the space 1 across which extends the piece of wire to be cut off and bent into a staple. During this first fraction of movement of the cam lever g, themember y will be caused by the link It to move down and to sever the piece of wire by its cutting edge j. A continuation of the movement of the lever g in the same direction will cause the legs 7' engaging the wire in their lower grooves j to piece of wire at right angles on both sides of the anvil m thereby orming a U-shaped staples and in this operation the vertically bent parts of the will engage the latin the legs 7'".

the movement of will cause the staple driver to expel the boss 2" of the member 11 and thrust the latter downwardly, bringing the staple driver into contact with the staple after its cam-shaped projection 71 has tilted the yielding member m forwardly, and its anvil we released the eral grooves j" the lever g A further.

staple. A further movement of the lever 9 will cause the staple driver to expel the staple from the legs 7' and press it against the stationary clenching block b and. through the sheets of paper 7) held across the latter, whereby the vertical parts of the staple 6 will be bent toward one another or clenched, thereby fastening the papers. (Fig. 3). It is'thus seen that a Single throw of the lever from the full line position into the dotted line position will operate successively the feeding mechanism, cuttin and forming mechanism and the staple river. During the first part of the movement of the lever g the feeding lever 0' will receive its given throw and will remain stationary during the rest of the movement, while its free end is sliding on the circular portion 9 of the lever. The return movement of the lever from the dotted line position into full line position will first release the member 2', then through the link It raise the members i and 7' into initial position, releasing the an vil m and permitting it to return into its normal position and finally the recess or groove 9 willengag'e the upper end of the feeding lever o tilting it from its dotted line position into full line position to cause itstoothed pawl 0, which, during the return movement, will slide freely along the wire, to clamp the latter for the next feed.

The part q on the base denotes an adjustable gage to enable the holding of the sheets of paper to be fastened in proper position across the clenching block V.

The plate Z is cut out at Z to accommodate the gripping member n and the upper edge of the said recess is grooved as at Z to expose the wire e passing through the opening Z to the action of the grip n. The opposite inner side of the plate Z is grooved as at Z so that when theplate is fixed in position an opening is left between the plate Z and the frame I) through which the piece of wire which accidentally may have become twisted without forming a staple will be fed outwardly.

Since the device may be variously modified without deviating from the principle of my invention, I do not restrict myself to the details shown and described.

In order to make the action of the cutting member j a positive one, an additional cam portion '9 is provided on the-cam lever g which is arranged at such a point that during the first fraction of rotatlon of the lever 9 it will engage the upper edge of the member j and force the latter downwardly thereby causing the cutting edge 9" to sever the wire.

What I claim ters Patent is:

1. In a device for forming and setting wire staples, the combination with wire feeding means, of a resiliently mounted anthe latter,

nieneae vil, a vertically movable member formed with a cutting edge to cut the wire and having means to bend the severed piece of wire at right angles on both sides of said anvil, a spring carriedby said member, a vertically movable staple driver supported on said spring and having means to actuate said anvil so as to release the staple from a clenching block below said staple driver, the latter being arranged to thrust said staple against said clenching block and to clench it, and manually operated means for operating said wire feeding means, said movable member and said driver successively.

2. in a device for forming and setting wire staples, a resiliently mounted anvil, a vertically movable member having downwardly extending legs serving to bend the wire across said anvil into a staple, and'a cutting edge on one of said legs to sever said wire, a vertically movable staple driver having means to actuate said anvil so as to restaple, and a manually all lease the said staple from said anvil and arranged to thrust the staple downwardly, a spring carried by said member for supporting said staple driver, means cooperating with saidv staple driver to clench the operated cam lever for operating said Wire feeding means, said movable member and said driver successively at a single throw,

3. lln a device for torming and setting wire staples, the combination with means for feeding the wire, of a swinging lever carrying said means, a resiliently mounted anvil, means for cutting the wire and bending the severed piece of Wire around said anvil into a staple, a staple driver tothrust the said staple outwardly and to assist in clenching it, a spring carried by said last named means to support said staple driver, and a manually operated cam lever operatively connected to said first lever and arranged at a certain position to engage and positively.

formed with downwardly projecting legsand a cutting edge, a spring carried by said member, a staple driver formed witha boss arranged in the path of said cam lever and resting on said spring, a resiliently mounted anvil having means arranged to be acted upon by said staple driver to be moved out of the path or said member, and a clenching block with which said staple driver cooperates to clench the staple,

5. ln a device for forming and setting wire staples, a lrame having a verticalgroove, a cam lever tulcrnmed in'said frame, a a staple driver loosely mounted in said groove and in the p'a'th of said cam lever to be engaged and posi-tivelyactuated by the latter at a certain'positionthereof, a vertically movable member linked to said cam lever and having downwardly projecting legs and a cutting edge, a spring carried by said member to support said staple driver, a resiliently mounted anvil having means arranged to be acted upon by said staple driver to be moved by the latter out otthe path 0t said movable member, means operated from said cam lever to feed the wire across the said anvil, said legs and cutting edge serving to sever and bend the wire into a staple, and a clenching block carried on said frame with which said staple driver cooperates to clench the staple.

' in testimony whereol ll afiln my signature in presence of two witnesses.

lSADURE GUll-llhlll.

Witnesses E. Jnnron, D, llirnrn.

tttl 

